Poly Fitting Reducer by Palm Tree Enterprise Australia $12.80 200-150 - $12.80 250-200 - $15.80 300-250 - $17.85 350-300 - $20.71 400-350 - $20.40 450-400 - $8.20 200-150 250-200 300-250 350-300 400-350 450-400 Size (mm) 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart This product is used to create a more secure duct connection.